The Agrilaser Handheld is a silent, portable device for bird repelling. Its patented optical technology emits a laser beam that is optimized for bird repelling over a long distance. Birds perceive the green laser beam as a physical danger coming toward them. Their only alternative to avoid being hit is to fly away. Unlike most conventional methods of deterrence, birds will not get used to the laser beam. After systematic use, the birds will consider the field on which the unit is used as unsafe and will not return, the company says.